To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Anti Static Mats
When one touches it, a charge is developed - then when it comes in
contact with a fully conducting surface, damage can occur. If instead
you are working on a proper anti-static mat, the charge from your body
and the part
On 04/13/2014 04:54 PM, Fred Townsend wrote:
The argument has been made that when a high voltage charge it
is discharged through the mat that the discharge must not be
too fast nor too slow. It must be just right. To Goldilocks
and her followers I say no it’s not so.
Not just right but
http://en.wikipedia.org/wiki/Antistatic_agent
-
Chuck, KE9UW
--
View this message in context:
http://elecraft.365791.n2.nabble.com/Anti-Static-Mats-tp7586727p7587021.html
Sent from the Elecraft mailing list archive at Nabble.com.
Hard to figure out what he is trying to prove. Finally on the antistatic mat
issue, his point was that it doesn't affect measurements made with circuits
lying on the mat. I guess I was thinking that he would show us how the mat
is antistatic, as he did with the bags.
Greetings, all.
Dave Jones,
Greetings, all.
Dave Jones, who runs the EEVblog, has a few videos relating to anti-static
bags and mats. The first one that talks about anti-static bags is worth
watching. It shows the difference between the common pink anti-static bags
and the silvery static shielding bags. Those pink bags
if you put a sensitive part
on a something that conducts
well then you get a static
discharge and damage.
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73
Fred, AE6QL
-Original Message-
From: Fred Townsend fptowns...@earthlink.net
Sent: Apr 6, 2014 9:24 PM
To: Sam Morgan k5oai@gmail.com, elecraft@mailman.qth.net
Subject: Re: [Elecraft] Anti Static Mats
I was once asked if the mats on my assembly line were antistatic. I thought
That would mean the part was charged. How would that happen?
-Original Message-
From: Lawrence D. Lopez lawlop...@gmail.com
Sent: Apr 7, 2014 5:23 AM
To: Alan Bloom n...@sonic.net
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Anti Static Mats
if you put a sensitive part
: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Anti Static Mats
if you put a sensitive part
on a something that conducts
well then you get a static
discharge and damage
When one touches it, a charge is developed - then when it comes in
contact with a fully conducting surface, damage can occur. If instead
you are working on a proper anti-static mat, the charge from your body
and the part is dissipated slowly, no damage will be done and everything
will be at
Due to the recent subject of Anti Static mats, I did a little googling
and thought I'd share my findings.
First for reference Alan Bloom had this to say back in Feb 27, 2008
http://elecraft.365791.n2.nabble.com/Radio-Shack-ESD-mat-doesn-t-meet-spec-td462383.html
quote
Here are the results:
One thing worth noting: 1000x lower resistance isn't necessarily better,
especially given that it's not uncommon to have a battery in modern gear.
The mat isn't supposed to ground everything, it's supposed to bleed off
static charges. It's also why wrist straps or something to ground you
are
On 04/06/2014 01:10 PM, Sam Morgan wrote:
Due to the recent subject of Anti Static mats, I did a little googling
and thought I'd share my findings.
...
maybe Alan or someone more knowledgeable than I can let us know if the
Sierra is really up to the standards we need met?
From my 2010
oops never mind, I just reread the pdf on the Sierra FS and it's made in
China, where as the Desco is made in the US (or so they say)
On 4/6/2014 9:00 PM, Alan Bloom wrote:
I recommend against using a mat that has no specifications other than
asserting it is an anti-static mat. I found that
@gmail.com
Sent: Apr 6, 2014 7:21 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Anti Static Mats
oops never mind, I just reread the pdf on the Sierra FS and it's made in
China, where as the Desco is made in the US (or so they say)
On 4/6/2014 9:00 PM, Alan Bloom wrote:
I recommend
On 04/06/2014 09:24 PM, Fred Townsend wrote:
...I flipped over a new mat. It clearly said antistatic but the
older mats didn’t have any labels and they looked different.
I took an ohmmeter, stabbing the probes in about an inch apart.
No reading.
You can't measure the mat resistance with an
of dead mats by now?
73
Fred, AE6QL
-Original Message-
From: Fred Townsend fptowns...@earthlink.net
Sent: Apr 6, 2014 9:24 PM
To: Sam Morgan k5oai@gmail.com, elecraft@mailman.qth.net
Subject: Re: [Elecraft] Anti Static Mats
I was once asked if the mats on my assembly line were
Ron D'Eau Claire wrote:
Greg K2UM wrote:
One touch and no static sparks to my equipment during operation, especially
during the winter, and a whole desk mat to work on my K3s and other
equipment.
-
If you want to discharge the static with a touch you need to
Ian, if you read my message you'll find that we agree on all but one point.
You added some good information about ESD safety, but that wasn't the intent
of the post. I was responding to a specific comment about someone touching
an ESD mat to discharge oneself. As you know, that won't work.
snip ...
When doing field repair we seldom have the luxury of anti-static mats,
wrist
straps, etc., but a little care in what we set the board on (not on cloth,
etc.) and touching a ground before picking them up keeps the parts safe.
Ron AC7AC
We did the touch method for some time
Ron D'Eau Claire wrote:
Ian, if you read my message you'll find that we agree on all but one point.
Having re-read the whole of the ESD section in the K3 Assembly Manual, I
wouldn't disagree with a single word.
But each of us is now trying to condense this whole subject into an
exchange of
Greg (AB7R),
Thanks! At those prices, I just ordered a six foot long mat to cover
my operating desk in front of all of the equipment. Nice. One touch
and no static sparks to my equipment during operation, especially
during the winter, and a whole desk mat to work on my K3s and other
Greg K2UM wrote:
One touch and no static sparks to my equipment during operation, especially
during the winter, and a whole desk mat to work on my K3s and other
equipment.
-
If you want to discharge the static with a touch you need to touch a real,
bare-metal
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